Google Git
Sign in
android / platform / dalvik / 4706baba5f4ac4354d0fba857bb05d60be0a29d5 / . / libcore / luni / src / main / native / org_apache_harmony_luni_platform_OSNetworkSystem.cpp
blob: 07eb381fceea23ae114deb02bd10378dd8df386d [file] [log] [blame]
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// BEGIN android-changed
//
// This file has been substantially reworked in order to provide more IPv6
// support and to move functionality from Java to native code where it made
// sense (e.g. when converting between IP addresses, socket structures, and
// strings, for which there exist fast and robust native implementations).
#define LOG_TAG "OSNetworkSystem"
#include "AndroidSystemNatives.h"
#include "JNIHelp.h"
#include "LocalArray.h"
#include "jni.h"
#include <arpa/inet.h>
#include <assert.h>
#include <errno.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/un.h>
#include <unistd.h>
// Temporary hack to build on systems that don't have up-to-date libc headers.
#ifndef IPV6_TCLASS
#ifdef __linux__
#define IPV6_TCLASS 67 // Linux
#else
#define IPV6_TCLASS -1 // BSD(-like); TODO: Something better than this!
#endif
#endif
/*
* TODO: The multicast code is highly platform-dependent, and for now
* we just punt on anything but Linux.
*/
#ifdef __linux__
#define ENABLE_MULTICAST
#endif
/**
* @name Socket Errors
* Error codes for socket operations
*
* @internal SOCKERR* range from -200 to -299 avoid overlap
*/
#define SOCKERR_NOTINITIALIZED -201 /* socket library uninitialized */
#define SOCKERR_BADAF -202 /* bad address family */
#define SOCKERR_BADPROTO -203 /* bad protocol */
#define SOCKERR_BADTYPE -204 /* bad type */
#define SOCKERR_SYSTEMBUSY -205 /* system busy handling requests */
#define SOCKERR_SYSTEMFULL -206 /* too many sockets */
#define SOCKERR_NOTCONNECTED -207 /* socket is not connected */
#define SOCKERR_INTERRUPTED -208 /* the call was cancelled */
#define SOCKERR_TIMEOUT -209 /* the operation timed out */
#define SOCKERR_CONNRESET -210 /* the connection was reset */
#define SOCKERR_WOULDBLOCK -211 /* the socket is marked as nonblocking operation would block */
#define SOCKERR_ADDRNOTAVAIL -212 /* address not available */
#define SOCKERR_ADDRINUSE -213 /* address already in use */
#define SOCKERR_NOTBOUND -214 /* the socket is not bound */
#define SOCKERR_INVALIDTIMEOUT -216 /* the specified timeout is invalid */
#define SOCKERR_FDSETFULL -217 /* Unable to create an FDSET */
#define SOCKERR_TIMEVALFULL -218 /* Unable to create a TIMEVAL */
#define SOCKERR_REMSOCKSHUTDOWN -219 /* The remote socket has shutdown gracefully */
#define SOCKERR_NOTLISTENING -220 /* listen() was not invoked prior to accept() */
#define SOCKERR_NOTSTREAMSOCK -221 /* The socket does not support connection-oriented service */
#define SOCKERR_ALREADYBOUND -222 /* The socket is already bound to an address */
#define SOCKERR_NBWITHLINGER -223 /* The socket is marked non-blocking & SO_LINGER is non-zero */
#define SOCKERR_ISCONNECTED -224 /* The socket is already connected */
#define SOCKERR_NOBUFFERS -225 /* No buffer space is available */
#define SOCKERR_HOSTNOTFOUND -226 /* Authoritative Answer Host not found */
#define SOCKERR_NODATA -227 /* Valid name, no data record of requested type */
#define SOCKERR_BOUNDORCONN -228 /* The socket has not been bound or is already connected */
#define SOCKERR_OPNOTSUPP -229 /* The socket does not support the operation */
#define SOCKERR_OPTUNSUPP -230 /* The socket option is not supported */
#define SOCKERR_OPTARGSINVALID -231 /* The socket option arguments are invalid */
#define SOCKERR_SOCKLEVELINVALID -232 /* The socket level is invalid */
#define SOCKERR_TIMEOUTFAILURE -233
#define SOCKERR_SOCKADDRALLOCFAIL -234 /* Unable to allocate the sockaddr structure */
#define SOCKERR_FDSET_SIZEBAD -235 /* The calculated maximum size of the file descriptor set is bad */
#define SOCKERR_UNKNOWNFLAG -236 /* The flag is unknown */
#define SOCKERR_MSGSIZE -237 /* The datagram was too big to fit the specified buffer & was truncated. */
#define SOCKERR_NORECOVERY -238 /* The operation failed with no recovery possible */
#define SOCKERR_ARGSINVALID -239 /* The arguments are invalid */
#define SOCKERR_BADDESC -240 /* The socket argument is not a valid file descriptor */
#define SOCKERR_NOTSOCK -241 /* The socket argument is not a socket */
#define SOCKERR_HOSTENTALLOCFAIL -242 /* Unable to allocate the hostent structure */
#define SOCKERR_TIMEVALALLOCFAIL -243 /* Unable to allocate the timeval structure */
#define SOCKERR_LINGERALLOCFAIL -244 /* Unable to allocate the linger structure */
#define SOCKERR_IPMREQALLOCFAIL -245 /* Unable to allocate the ipmreq structure */
#define SOCKERR_FDSETALLOCFAIL -246 /* Unable to allocate the fdset structure */
#define SOCKERR_OPFAILED -247 /* Operation failed */
#define SOCKERR_VALUE_NULL -248 /* The value indexed was NULL */
#define SOCKERR_CONNECTION_REFUSED -249 /* connection was refused */
#define SOCKERR_ENETUNREACH -250 /* network is not reachable */
#define SOCKERR_EACCES -251 /* permissions do not allow action on socket */
#define SOCKERR_EHOSTUNREACH -252 /* no route to host */
#define SOCKERR_EPIPE -253 /* broken pipe */
#define JAVASOCKOPT_TCP_NODELAY 1
#define JAVASOCKOPT_IP_TOS 3
#define JAVASOCKOPT_SO_REUSEADDR 4
#define JAVASOCKOPT_SO_KEEPALIVE 8
#define JAVASOCKOPT_IP_MULTICAST_IF 16
#define JAVASOCKOPT_MCAST_TTL 17
#define JAVASOCKOPT_IP_MULTICAST_LOOP 18
#define JAVASOCKOPT_MCAST_ADD_MEMBERSHIP 19
#define JAVASOCKOPT_MCAST_DROP_MEMBERSHIP 20
#define JAVASOCKOPT_IP_MULTICAST_IF2 31
#define JAVASOCKOPT_SO_BROADCAST 32
#define JAVASOCKOPT_SO_LINGER 128
#define JAVASOCKOPT_REUSEADDR_AND_REUSEPORT 10001
#define JAVASOCKOPT_SO_SNDBUF 4097
#define JAVASOCKOPT_SO_RCVBUF 4098
#define JAVASOCKOPT_SO_RCVTIMEOUT 4102
#define JAVASOCKOPT_SO_OOBINLINE 4099
/* constants for calling multi-call functions */
#define SOCKET_STEP_START 10
#define SOCKET_STEP_CHECK 20
#define SOCKET_STEP_DONE 30
#define BROKEN_MULTICAST_IF 1
#define BROKEN_MULTICAST_TTL 2
#define BROKEN_TCP_NODELAY 4
#define SOCKET_CONNECT_STEP_START 0
#define SOCKET_CONNECT_STEP_CHECK 1
#define SOCKET_OP_NONE 0
#define SOCKET_OP_READ 1
#define SOCKET_OP_WRITE 2
#define SOCKET_NOFLAGS 0
// Local constants for getOrSetSocketOption
#define SOCKOPT_GET 1
#define SOCKOPT_SET 2
struct CachedFields {
jfieldID fd_descriptor;
jclass iaddr_class;
jmethodID iaddr_getbyaddress;
jclass i4addr_class;
jmethodID i4addr_class_init;
jfieldID iaddr_ipaddress;
jclass genericipmreq_class;
jclass integer_class;
jmethodID integer_class_init;
jfieldID integer_class_value;
jclass boolean_class;
jmethodID boolean_class_init;
jfieldID boolean_class_value;
jclass byte_class;
jmethodID byte_class_init;
jfieldID byte_class_value;
jclass socketimpl_class;
jfieldID socketimpl_address;
jfieldID socketimpl_port;
jclass dpack_class;
jfieldID dpack_address;
jfieldID dpack_port;
jfieldID dpack_length;
} gCachedFields;
/* needed for connecting with timeout */
struct selectFDSet {
int nfds;
int sock;
fd_set writeSet;
fd_set readSet;
fd_set exceptionSet;
};
static const char * netLookupErrorString(int anErrorNum);
/**
* Throws an SocketException with the message affiliated with the errorCode.
*
* @deprecated: 'errorCode' is one of the bogus SOCKERR_ values, *not* errno.
* jniThrowSocketException is the better choice.
*/
static void throwSocketException(JNIEnv *env, int errorCode) {
jniThrowException(env, "java/net/SocketException",
netLookupErrorString(errorCode));
}
// TODO(enh): move to JNIHelp.h
static void jniThrowExceptionWithErrno(JNIEnv* env,
const char* exceptionClassName, int error) {
char buf[BUFSIZ];
jniThrowException(env, exceptionClassName,
jniStrError(error, buf, sizeof(buf)));
}
static void jniThrowBindException(JNIEnv* env, int error) {
jniThrowExceptionWithErrno(env, "java/net/BindException", error);
}
static void jniThrowSocketException(JNIEnv* env, int error) {
jniThrowExceptionWithErrno(env, "java/net/SocketException", error);
}
static void jniThrowSocketTimeoutException(JNIEnv* env, int error) {
jniThrowExceptionWithErrno(env, "java/net/SocketTimeoutException", error);
}
// TODO(enh): move to JNIHelp.h
static void throwNullPointerException(JNIEnv *env) {
jniThrowException(env, "java/lang/NullPointerException", NULL);
}
// Used by functions that shouldn't throw SocketException. (These functions
// aren't meant to see bad addresses, so seeing one really does imply an
// internal error.)
// TODO: fix the code (native and Java) so we don't paint ourselves into this corner.
static void jniThrowBadAddressFamily(JNIEnv* env) {
jniThrowException(env, "java/lang/IllegalArgumentException", "Bad address family");
}
static bool jniGetFd(JNIEnv* env, jobject fileDescriptor, int& fd) {
fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
if (fd == -1) {
jniThrowSocketException(env, EBADF);
return false;
}
return true;
}
/**
* Converts a native address structure to a Java byte array.
*/
static jbyteArray socketAddressToByteArray(JNIEnv *env,
struct sockaddr_storage *address) {
void *rawAddress;
size_t addressLength;
if (address->ss_family == AF_INET) {
struct sockaddr_in *sin = (struct sockaddr_in *) address;
rawAddress = &sin->sin_addr.s_addr;
addressLength = 4;
} else if (address->ss_family == AF_INET6) {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) address;
rawAddress = &sin6->sin6_addr.s6_addr;
addressLength = 16;
} else {
jniThrowBadAddressFamily(env);
return NULL;
}
jbyteArray byteArray = env->NewByteArray(addressLength);
if (byteArray == NULL) {
return NULL;
}
env->SetByteArrayRegion(byteArray, 0, addressLength, (jbyte *) rawAddress);
return byteArray;
}
/**
* Returns the port number in a sockaddr_storage structure.
*
* @param address the sockaddr_storage structure to get the port from
*
* @return the port number, or -1 if the address family is unknown.
*/
static int getSocketAddressPort(struct sockaddr_storage *address) {
switch (address->ss_family) {
case AF_INET:
return ntohs(((struct sockaddr_in *) address)->sin_port);
case AF_INET6:
return ntohs(((struct sockaddr_in6 *) address)->sin6_port);
default:
return -1;
}
}
/**
* Obtain the socket address family from an existing socket.
*
* @param socket the file descriptor of the socket to examine
* @return an integer, the address family of the socket
*/
static int getSocketAddressFamily(int socket) {
sockaddr_storage ss;
socklen_t namelen = sizeof(ss);
int ret = getsockname(socket, (sockaddr*) &ss, &namelen);
if (ret != 0) {
return AF_UNSPEC;
} else {
return ss.ss_family;
}
}
jobject byteArrayToInetAddress(JNIEnv* env, jbyteArray byteArray) {
if (byteArray == NULL) {
return NULL;
}
return env->CallStaticObjectMethod(gCachedFields.iaddr_class,
gCachedFields.iaddr_getbyaddress, byteArray);
}
/**
* Converts a native address structure to an InetAddress object.
* Throws a NullPointerException or an IOException in case of
* error.
*
* @param sockAddress the sockaddr_storage structure to convert
*
* @return a jobject representing an InetAddress
*/
jobject socketAddressToInetAddress(JNIEnv* env, sockaddr_storage* sockAddress) {
jbyteArray byteArray = socketAddressToByteArray(env, sockAddress);
return byteArrayToInetAddress(env, byteArray);
}
/**
* Converts an IPv4 address to an IPv4-mapped IPv6 address if fd is an IPv6
* socket.
* @param fd the socket.
* @param sin_ss the address.
* @param sin6_ss scratch space where we can store the mapped address if necessary.
* @param mapUnspecified if true, convert 0.0.0.0 to ::ffff:0:0; if false, to ::
* @return either sin_ss or sin6_ss, depending on which the caller should use.
*/
static const sockaddr* convertIpv4ToMapped(int fd,
const sockaddr_storage* sin_ss, sockaddr_storage* sin6_ss, bool mapUnspecified) {
// We need to map if we have an IPv4 address but an IPv6 socket.
bool needsMapping = (sin_ss->ss_family == AF_INET && getSocketAddressFamily(fd) == AF_INET6);
if (!needsMapping) {
return reinterpret_cast<const sockaddr*>(sin_ss);
}
// Map the IPv4 address in sin_ss into an IPv6 address in sin6_ss.
const sockaddr_in* sin = reinterpret_cast<const sockaddr_in*>(sin_ss);
sockaddr_in6* sin6 = reinterpret_cast<sockaddr_in6*>(sin6_ss);
memset(sin6, 0, sizeof(*sin6));
sin6->sin6_family = AF_INET6;
sin6->sin6_port = sin->sin_port;
// TODO: mapUnspecified was introduced because kernels < 2.6.31 don't allow
// you to bind to ::ffff:0.0.0.0. When we move to something >= 2.6.31, we
// should make the code behave as if mapUnspecified were always true, and
// remove the parameter.
if (sin->sin_addr.s_addr != 0 || mapUnspecified) {
memset(&(sin6->sin6_addr.s6_addr[10]), 0xff, 2);
}
memcpy(&sin6->sin6_addr.s6_addr[12], &sin->sin_addr.s_addr, 4);
return reinterpret_cast<const sockaddr*>(sin6_ss);
}
/**
* Converts an InetAddress object and port number to a native address structure.
* Throws a NullPointerException or a SocketException in case of
* error.
*/
static bool byteArrayToSocketAddress(JNIEnv *env,
jbyteArray addressBytes, int port, sockaddr_storage *sockaddress) {
if (addressBytes == NULL) {
throwNullPointerException(env);
return false;
}
// Convert the IP address bytes to the proper IP address type.
size_t addressLength = env->GetArrayLength(addressBytes);
memset(sockaddress, 0, sizeof(*sockaddress));
if (addressLength == 4) {
// IPv4 address.
sockaddr_in *sin = reinterpret_cast<sockaddr_in*>(sockaddress);
sin->sin_family = AF_INET;
sin->sin_port = htons(port);
jbyte* dst = reinterpret_cast<jbyte*>(&sin->sin_addr.s_addr);
env->GetByteArrayRegion(addressBytes, 0, 4, dst);
} else if (addressLength == 16) {
// IPv6 address.
sockaddr_in6 *sin6 = reinterpret_cast<sockaddr_in6*>(sockaddress);
sin6->sin6_family = AF_INET6;
sin6->sin6_port = htons(port);
jbyte* dst = reinterpret_cast<jbyte*>(&sin6->sin6_addr.s6_addr);
env->GetByteArrayRegion(addressBytes, 0, 16, dst);
} else {
jniThrowBadAddressFamily(env);
return false;
}
return true;
}
/**
* Converts an InetAddress object and port number to a native address structure.
*/
static bool inetAddressToSocketAddress(JNIEnv *env, jobject inetaddress,
int port, sockaddr_storage *sockaddress) {
// Get the byte array that stores the IP address bytes in the InetAddress.
if (inetaddress == NULL) {
throwNullPointerException(env);
return false;
}
jbyteArray addressBytes =
reinterpret_cast<jbyteArray>(env->GetObjectField(inetaddress,
gCachedFields.iaddr_ipaddress));
return byteArrayToSocketAddress(env, addressBytes, port, sockaddress);
}
/**
* Convert a Java byte array representing an IP address to a Java string.
*
* @param addressByteArray the byte array to convert.
*
* @return a string with the textual representation of the address.
*/
static jstring osNetworkSystem_byteArrayToIpString(JNIEnv* env, jclass,
jbyteArray byteArray) {
if (byteArray == NULL) {
throwNullPointerException(env);
return NULL;
}
sockaddr_storage ss;
if (!byteArrayToSocketAddress(env, byteArray, 0, &ss)) {
return NULL;
}
// TODO: getnameinfo seems to want its length parameter to be exactly
// sizeof(sockaddr_in) for an IPv4 address and sizeof (sockaddr_in6) for an
// IPv6 address. Fix getnameinfo so it accepts sizeof(sockaddr_storage), and
// then remove this hack.
int sa_size;
if (ss.ss_family == AF_INET) {
sa_size = sizeof(sockaddr_in);
} else if (ss.ss_family == AF_INET6) {
sa_size = sizeof(sockaddr_in6);
} else {
jniThrowBadAddressFamily(env);
return NULL;
}
char ipString[INET6_ADDRSTRLEN];
int rc = getnameinfo(reinterpret_cast<sockaddr*>(&ss), sa_size,
ipString, sizeof(ipString), NULL, 0, NI_NUMERICHOST);
if (rc != 0) {
jniThrowException(env, "java/net/UnknownHostException", gai_strerror(rc));
return NULL;
}
return env->NewStringUTF(ipString);
}
/**
* Convert a Java string representing an IP address to a Java byte array.
* The formats accepted are:
* - IPv4:
* - 1.2.3.4
* - 1.2.4
* - 1.4
* - 4
* - IPv6
* - Compressed form (2001:db8::1)
* - Uncompressed form (2001:db8:0:0:0:0:0:1)
* - IPv4-compatible (::192.0.2.0)
* - With an embedded IPv4 address (2001:db8::192.0.2.0).
* IPv6 addresses may appear in square brackets.
*
* @param addressByteArray the byte array to convert.
*
* @return a string with the textual representation of the address.
*
* @throws UnknownHostException the IP address was invalid.
*/
static jbyteArray osNetworkSystem_ipStringToByteArray(JNIEnv* env, jclass,
jstring javaString) {
if (javaString == NULL) {
throwNullPointerException(env);
return NULL;
}
// Convert the String to UTF bytes.
size_t byteCount = env->GetStringUTFLength(javaString);
LocalArray<INET6_ADDRSTRLEN> bytes(byteCount + 1);
char* ipString = &bytes[0];
env->GetStringUTFRegion(javaString, 0, env->GetStringLength(javaString), ipString);
// Accept IPv6 addresses (only) in square brackets for compatibility.
if (ipString[0] == '[' && ipString[byteCount - 1] == ']' &&
index(ipString, ':') != NULL) {
memmove(ipString, ipString + 1, byteCount - 2);
ipString[byteCount - 2] = '\0';
}
jbyteArray result = NULL;
addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_NUMERICHOST;
sockaddr_storage ss;
memset(&ss, 0, sizeof(ss));
addrinfo* res = NULL;
int ret = getaddrinfo(ipString, NULL, &hints, &res);
if (ret == 0 && res) {
// Convert IPv4-mapped addresses to IPv4 addresses.
// The RI states "Java will never return an IPv4-mapped address".
sockaddr_in6* sin6 = reinterpret_cast<sockaddr_in6*>(res->ai_addr);
if (res->ai_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
sockaddr_in* sin = reinterpret_cast<sockaddr_in*>(&ss);
sin->sin_family = AF_INET;
sin->sin_port = sin6->sin6_port;
memcpy(&sin->sin_addr.s_addr, &sin6->sin6_addr.s6_addr[12], 4);
result = socketAddressToByteArray(env, &ss);
} else {
result = socketAddressToByteArray(env, reinterpret_cast<sockaddr_storage*>(res->ai_addr));
}
} else {
// For backwards compatibility, deal with address formats that
// getaddrinfo does not support. For example, 1.2.3, 1.3, and even 3 are
// valid IPv4 addresses according to the Java API. If getaddrinfo fails,
// try to use inet_aton.
sockaddr_in* sin = reinterpret_cast<sockaddr_in*>(&ss);
if (inet_aton(ipString, &sin->sin_addr)) {
sin->sin_family = AF_INET;
sin->sin_port = 0;
result = socketAddressToByteArray(env, &ss);
}
}
if (res) {
freeaddrinfo(res);
}
if (! result) {
env->ExceptionClear();
jniThrowException(env, "java/net/UnknownHostException",
gai_strerror(ret));
}
return result;
}
/**
* Answer a new java.lang.Boolean object.
*
* @param env pointer to the JNI library
* @param anInt the Boolean constructor argument
*
* @return the new Boolean
*/
static jobject newJavaLangBoolean(JNIEnv * env, jint anInt) {
jclass tempClass;
jmethodID tempMethod;
tempClass = gCachedFields.boolean_class;
tempMethod = gCachedFields.boolean_class_init;
return env->NewObject(tempClass, tempMethod, (jboolean) (anInt != 0));
}
/**
* Answer a new java.lang.Byte object.
*
* @param env pointer to the JNI library
* @param anInt the Byte constructor argument
*
* @return the new Byte
*/
static jobject newJavaLangByte(JNIEnv * env, jbyte val) {
jclass tempClass;
jmethodID tempMethod;
tempClass = gCachedFields.byte_class;
tempMethod = gCachedFields.byte_class_init;
return env->NewObject(tempClass, tempMethod, val);
}
/**
* Answer a new java.lang.Integer object.
*
* @param env pointer to the JNI library
* @param anInt the Integer constructor argument
*
* @return the new Integer
*/
static jobject newJavaLangInteger(JNIEnv* env, jint anInt) {
return env->NewObject(gCachedFields.integer_class, gCachedFields.integer_class_init, anInt);
}
// Converts a number of milliseconds to a timeval.
static timeval toTimeval(long ms) {
timeval tv;
tv.tv_sec = ms / 1000;
tv.tv_usec = (ms - tv.tv_sec*1000) * 1000;
return tv;
}
// Converts a timeval to a number of milliseconds.
static long toMs(const timeval& tv) {
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
/**
* Query OS for timestamp.
* Retrieve the current value of system clock and convert to milliseconds.
*
* @param[in] portLibrary The port library.
*
* @return 0 on failure, time value in milliseconds on success.
* @deprecated Use @ref time_hires_clock and @ref time_hires_delta
*
* technically, this should return I_64 since both timeval.tv_sec and
* timeval.tv_usec are long
*/
static int time_msec_clock() {
timeval tp;
struct timezone tzp;
gettimeofday(&tp, &tzp);
return toMs(tp);
}
/**
* Answer the errorString corresponding to the errorNumber, if available.
* This function will answer a default error string, if the errorNumber is not
* recognized.
*
* This function will have to be reworked to handle internationalization
* properly, removing the explicit strings.
*
* @param anErrorNum the error code to resolve to a human readable string
*
* @return a human readable error string
*/
static const char * netLookupErrorString(int anErrorNum) {
switch (anErrorNum) {
case SOCKERR_NOTINITIALIZED:
return "Socket library uninitialized";
case SOCKERR_BADAF:
return "Bad address family";
case SOCKERR_BADPROTO:
return "Bad protocol";
case SOCKERR_BADTYPE:
return "Bad type";
case SOCKERR_SYSTEMBUSY:
return "System busy handling requests";
case SOCKERR_SYSTEMFULL:
return "Too many sockets allocated";
case SOCKERR_NOTCONNECTED:
return "Socket is not connected";
case SOCKERR_INTERRUPTED:
return "The system call was cancelled";
case SOCKERR_TIMEOUT:
return "The operation timed out";
case SOCKERR_CONNRESET:
return "The connection was reset";
case SOCKERR_WOULDBLOCK:
return "The nonblocking operation would block";
case SOCKERR_ADDRNOTAVAIL:
return "The address is not available";
case SOCKERR_ADDRINUSE:
return "The address is already in use";
case SOCKERR_NOTBOUND:
return "The socket is not bound";
case SOCKERR_INVALIDTIMEOUT:
return "The specified timeout is invalid";
case SOCKERR_FDSETFULL:
return "Unable to create an FDSET";
case SOCKERR_TIMEVALFULL:
return "Unable to create a TIMEVAL";
case SOCKERR_REMSOCKSHUTDOWN:
return "The remote socket has shutdown gracefully";
case SOCKERR_NOTLISTENING:
return "Listen() was not invoked prior to accept()";
case SOCKERR_NOTSTREAMSOCK:
return "The socket does not support connection-oriented service";
case SOCKERR_ALREADYBOUND:
return "The socket is already bound to an address";
case SOCKERR_NBWITHLINGER:
return "The socket is marked non-blocking & SO_LINGER is non-zero";
case SOCKERR_ISCONNECTED:
return "The socket is already connected";
case SOCKERR_NOBUFFERS:
return "No buffer space is available";
case SOCKERR_HOSTNOTFOUND:
return "Authoritative Answer Host not found";
case SOCKERR_NODATA:
return "Valid name, no data record of requested type";
case SOCKERR_BOUNDORCONN:
return "The socket has not been bound or is already connected";
case SOCKERR_OPNOTSUPP:
return "The socket does not support the operation";
case SOCKERR_OPTUNSUPP:
return "The socket option is not supported";
case SOCKERR_OPTARGSINVALID:
return "The socket option arguments are invalid";
case SOCKERR_SOCKLEVELINVALID:
return "The socket level is invalid";
case SOCKERR_TIMEOUTFAILURE:
return "The timeout operation failed";
case SOCKERR_SOCKADDRALLOCFAIL:
return "Failed to allocate address structure";
case SOCKERR_FDSET_SIZEBAD:
return "The calculated maximum size of the file descriptor set is bad";
case SOCKERR_UNKNOWNFLAG:
return "The flag is unknown";
case SOCKERR_MSGSIZE:
return "The datagram was too big to fit the specified buffer, so truncated";
case SOCKERR_NORECOVERY:
return "The operation failed with no recovery possible";
case SOCKERR_ARGSINVALID:
return "The arguments are invalid";
case SOCKERR_BADDESC:
return "The socket argument is not a valid file descriptor";
case SOCKERR_NOTSOCK:
return "The socket argument is not a socket";
case SOCKERR_HOSTENTALLOCFAIL:
return "Unable to allocate the hostent structure";
case SOCKERR_TIMEVALALLOCFAIL:
return "Unable to allocate the timeval structure";
case SOCKERR_LINGERALLOCFAIL:
return "Unable to allocate the linger structure";
case SOCKERR_IPMREQALLOCFAIL:
return "Unable to allocate the ipmreq structure";
case SOCKERR_FDSETALLOCFAIL:
return "Unable to allocate the fdset structure";
case SOCKERR_OPFAILED:
return "Operation failed";
case SOCKERR_CONNECTION_REFUSED:
return "Connection refused";
case SOCKERR_ENETUNREACH:
return "Network unreachable";
case SOCKERR_EHOSTUNREACH:
return "No route to host";
case SOCKERR_EPIPE:
return "Broken pipe";
case SOCKERR_EACCES:
return "Permission denied (maybe missing INTERNET permission)";
default:
LOGE("unknown socket error %d", anErrorNum);
return "unknown error";
}
}
static int convertError(int errorCode) {
switch (errorCode) {
case EBADF:
return SOCKERR_BADDESC;
case ENOBUFS:
return SOCKERR_NOBUFFERS;
case EOPNOTSUPP:
return SOCKERR_OPNOTSUPP;
case ENOPROTOOPT:
return SOCKERR_OPTUNSUPP;
case EINVAL:
return SOCKERR_SOCKLEVELINVALID;
case ENOTSOCK:
return SOCKERR_NOTSOCK;
case EINTR:
return SOCKERR_INTERRUPTED;
case ENOTCONN:
return SOCKERR_NOTCONNECTED;
case EAFNOSUPPORT:
return SOCKERR_BADAF;
/* note: CONNRESET not included because it has the same
* value as ECONNRESET and they both map to SOCKERR_CONNRESET */
case ECONNRESET:
return SOCKERR_CONNRESET;
case EAGAIN:
return SOCKERR_WOULDBLOCK;
case EPROTONOSUPPORT:
return SOCKERR_BADPROTO;
case EFAULT:
return SOCKERR_ARGSINVALID;
case ETIMEDOUT:
return SOCKERR_TIMEOUT;
case ECONNREFUSED:
return SOCKERR_CONNECTION_REFUSED;
case ENETUNREACH:
return SOCKERR_ENETUNREACH;
case EACCES:
return SOCKERR_EACCES;
case EPIPE:
return SOCKERR_EPIPE;
case EHOSTUNREACH:
return SOCKERR_EHOSTUNREACH;
case EADDRINUSE:
return SOCKERR_ADDRINUSE;
case EADDRNOTAVAIL:
return SOCKERR_ADDRNOTAVAIL;
case EMSGSIZE:
return SOCKERR_MSGSIZE;
default:
LOGE("unclassified errno %d (%s)", errorCode, strerror(errorCode));
return SOCKERR_OPFAILED;
}
}
static int selectWait(int fd, int uSecTime) {
timeval tv;
timeval* tvp;
if (uSecTime >= 0) {
/* Use a timeout if uSecTime >= 0 */
memset(&tv, 0, sizeof(tv));
tv.tv_usec = uSecTime;
tvp = &tv;
} else {
/* Infinite timeout if uSecTime < 0 */
tvp = NULL;
}
fd_set readFds;
FD_ZERO(&readFds);
FD_SET(fd, &readFds);
int result = select(fd + 1, &readFds, NULL, NULL, tvp);
if (result == -1) {
if (errno == EINTR) {
result = SOCKERR_INTERRUPTED;
} else {
result = SOCKERR_OPFAILED;
}
} else if (result == 0) {
result = SOCKERR_TIMEOUT;
}
return result;
}
// Returns 0 on success, not obviously meaningful negative values on error.
static int pollSelectWait(JNIEnv *env, jobject fileDescriptor, int timeout) {
/* now try reading the socket for the timeout.
* if timeout is 0 try forever until the sockets gets ready or until an
* exception occurs.
*/
int pollTimeoutUSec = 100000, pollMsec = 100;
int finishTime = 0;
int timeLeft = timeout;
int hasTimeout = timeout > 0 ? 1 : 0;
int result = 0;
int handle;
if (hasTimeout) {
finishTime = time_msec_clock() + timeout;
}
int poll = 1;
while (poll) { /* begin polling loop */
/*
* Fetch the handle every time in case the socket is closed.
*/
handle = jniGetFDFromFileDescriptor(env, fileDescriptor);
if (handle == -1) {
jniThrowSocketException(env, EINTR);
return -1;
}
if (hasTimeout) {
if (timeLeft - 10 < pollMsec) {
pollTimeoutUSec = timeLeft <= 0 ? 0 : (timeLeft * 1000);
}
result = selectWait(handle, pollTimeoutUSec);
/*
* because we are polling at a time smaller than timeout
* (presumably) lets treat an interrupt and timeout the same - go
* see if we're done timewise, and then just try again if not.
*/
if (SOCKERR_TIMEOUT == result ||
SOCKERR_INTERRUPTED == result) {
timeLeft = finishTime - time_msec_clock();
if (timeLeft <= 0) {
/*
* Always throw the "timeout" message because that is
* effectively what has happened, even if we happen to
* have been interrupted.
*/
jniThrowSocketTimeoutException(env, ETIMEDOUT);
} else {
continue; // try again
}
} else if (0 > result) {
throwSocketException(env, result);
}
poll = 0;
} else { /* polling with no timeout (why would you do this?)*/
result = selectWait(handle, pollTimeoutUSec);
/*
* if interrupted (or a timeout) just retry
*/
if (SOCKERR_TIMEOUT == result ||
SOCKERR_INTERRUPTED == result) {
continue; // try again
} else if (0 > result) {
throwSocketException(env, result);
}
poll = 0;
}
} /* end polling loop */
return result;
}
/**
* Wrapper for connect() that converts IPv4 addresses to IPv4-mapped IPv6
* addresses if necessary.
*
* @param socket the file descriptor of the socket to connect
* @param socketAddress the address to connect to
*/
static int doConnect(int fd, const sockaddr_storage* socketAddress) {
sockaddr_storage tmp;
const sockaddr* realAddress = convertIpv4ToMapped(fd, socketAddress, &tmp, true);
return TEMP_FAILURE_RETRY(connect(fd, realAddress, sizeof(sockaddr_storage)));
}
/**
* Establish a connection to a peer with a timeout. This function is called
* repeatedly in order to carry out the connect and to allow other tasks to
* proceed on certain platforms. The caller must first call with
* step = SOCKET_STEP_START, if the result is SOCKERR_NOTCONNECTED it will then
* call it with step = CHECK until either another error or 0 is returned to
* indicate the connect is complete. Each time the function should sleep for no
* more than timeout milliseconds. If the connect succeeds or an error occurs,
* the caller must always end the process by calling the function with
* step = SOCKET_STEP_DONE
*
* @param[in] portLibrary The port library.
* @param[in] sock pointer to the unconnected local socket.
* @param[in] addr pointer to the sockaddr, specifying remote host/port.
* @param[in] timeout the timeout in milliseconds. If timeout is negative,
* perform a block operation.
* @param[in,out] pointer to context pointer. Filled in on first call and then
* to be passed into each subsequent call.
*
* @return 0, if no errors occurred, otherwise the (negative) error code.
*/
// TODO: do we really want to pass 'addr' by value?
static int sockConnectWithTimeout(int handle, sockaddr_storage addr,
int timeout, unsigned int step, jbyte *ctxt) {
int rc = 0;
int errorVal;
socklen_t errorValLen = sizeof(int);
selectFDSet* context = reinterpret_cast<selectFDSet*>(ctxt);
if (SOCKET_STEP_START == step) {
context->sock = handle;
context->nfds = handle + 1;
/* set the socket to non-blocking */
int block = JNI_TRUE;
rc = ioctl(handle, FIONBIO, &block);
if (rc != 0) {
return convertError(rc);
}
// LOGD("+connect to address 0x%08x (via normal) on handle %d",
// addr.sin_addr.s_addr, handle);
rc = doConnect(handle, &addr);
// LOGD("-connect to address 0x%08x (via normal) returned %d",
// addr.sin_addr.s_addr, (int) rc);
if (rc == -1) {
rc = errno;
switch (rc) {
case EINTR:
return SOCKERR_ALREADYBOUND;
case EAGAIN:
case EINPROGRESS:
return SOCKERR_NOTCONNECTED;
default:
return convertError(rc);
}
}
/* we connected right off the bat so just return */
return rc;
} else if (SOCKET_STEP_CHECK == step) {
/* now check if we have connected yet */
/*
* set the timeout value to be used. Because on some unix platforms we
* don't get notified when a socket is closed we only sleep for 100ms
* at a time
*
* TODO: is this relevant for Android?
*/
if (timeout > 100) {
timeout = 100;
}
timeval passedTimeout(toTimeval(timeout));
/* initialize the FD sets for the select */
FD_ZERO(&(context->exceptionSet));
FD_ZERO(&(context->writeSet));
FD_ZERO(&(context->readSet));
FD_SET(context->sock, &(context->writeSet));
FD_SET(context->sock, &(context->readSet));
FD_SET(context->sock, &(context->exceptionSet));
rc = select(context->nfds,
&(context->readSet),
&(context->writeSet),
&(context->exceptionSet),
timeout >= 0 ? &passedTimeout : NULL);
/* if there is at least one descriptor ready to be checked */
if (0 < rc) {
/* if the descriptor is in the write set we connected or failed */
if (FD_ISSET(context->sock, &(context->writeSet))) {
if (!FD_ISSET(context->sock, &(context->readSet))) {
/* ok we have connected ok */
return 0;
} else {
/* ok we have more work to do to figure it out */
if (getsockopt(context->sock, SOL_SOCKET, SO_ERROR,
&errorVal, &errorValLen) >= 0) {
return errorVal ? convertError(errorVal) : 0;
} else {
return convertError(errno);
}
}
}
/* if the descriptor is in the exception set the connect failed */
if (FD_ISSET(context->sock, &(context->exceptionSet))) {
if (getsockopt(context->sock, SOL_SOCKET, SO_ERROR, &errorVal,
&errorValLen) >= 0) {
return errorVal ? convertError(errorVal) : 0;
}
rc = errno;
return convertError(rc);
}
} else if (rc < 0) {
/* something went wrong with the select call */
rc = errno;
/* if it was EINTR we can just try again. Return not connected */
if (EINTR == rc) {
return SOCKERR_NOTCONNECTED;
}
/* some other error occured so look it up and return */
return convertError(rc);
}
/*
* if we get here the timeout expired or the connect had not yet
* completed just indicate that the connect is not yet complete
*/
return SOCKERR_NOTCONNECTED;
} else if (SOCKET_STEP_DONE == step) {
/* we are done the connect or an error occured so clean up */
if (handle != -1) {
int block = JNI_FALSE;
ioctl(handle, FIONBIO, &block);
}
return 0;
}
return SOCKERR_ARGSINVALID;
}
#if LOG_SOCKOPT
/**
* Helper method to log getsockopt/getsockopt calls.
*/
static const char *sockoptLevelToString(int level) {
switch(level) {
case SOL_SOCKET:
return "SOL_SOCKET";
case IPPROTO_IP:
return "IPPROTO_IP";
case IPPROTO_IPV6:
return "IPPROTO_IPV6";
default:
return "SOL_???";
}
}
#endif
/**
* Helper method to get or set socket options
*
* @param action SOCKOPT_GET to get an option, SOCKOPT_SET to set it
* @param socket the file descriptor of the socket to use
* @param ipv4Option the option value to use for an IPv4 socket
* @param ipv6Option the option value to use for an IPv6 socket
* @param optionValue the value of the socket option to get or set
* @param optionLength the length of the socket option to get or set
*
* @return the value of the socket call, or -1 on failure inside this function
*
* @note on internal failure, the errno variable will be set appropriately
*/
static int getOrSetSocketOption(int action, int socket, int ipv4Option,
int ipv6Option, void *optionValue, socklen_t *optionLength) {
int option;
int protocol;
int family = getSocketAddressFamily(socket);
switch (family) {
case AF_INET:
option = ipv4Option;
protocol = IPPROTO_IP;
break;
case AF_INET6:
option = ipv6Option;
protocol = IPPROTO_IPV6;
break;
default:
// TODO(enh): throw Java exceptions from this method instead of just
// returning error codes.
errno = EAFNOSUPPORT;
return -1;
}
int ret;
if (action == SOCKOPT_GET) {
ret = getsockopt(socket, protocol, option, optionValue, optionLength);
#if LOG_SOCKOPT
LOGI("getsockopt(%d, %s, %d, %p, [%d]) = %d %s",
socket, sockoptLevelToString(protocol), option, optionValue,
*optionLength, ret, (ret == -1) ? strerror(errno) : "");
#endif
} else if (action == SOCKOPT_SET) {
ret = setsockopt(socket, protocol, option, optionValue, *optionLength);
#if LOG_SOCKOPT
LOGI("setsockopt(%d, %s, %d, [%d], %d) = %d %s",
socket, sockoptLevelToString(protocol), option,
// Note: this only works for integer options.
// TODO: Use dvmPrintHexDump() to log non-integer options.
*(int *)optionValue, *optionLength, ret,
(ret == -1) ? strerror(errno) : "");
#endif
} else {
errno = EINVAL;
ret = -1;
}
return ret;
}
#ifdef ENABLE_MULTICAST
/*
* Find the interface index that was set for this socket by the IP_MULTICAST_IF
* or IPV6_MULTICAST_IF socket option.
*
* @param socket the socket to examine
*
* @return the interface index, or -1 on failure
*
* @note on internal failure, the errno variable will be set appropriately
*/
static int interfaceIndexFromMulticastSocket(int socket) {
int family = getSocketAddressFamily(socket);
int interfaceIndex;
int result;
if (family == AF_INET) {
// IP_MULTICAST_IF returns a pointer to a struct ip_mreqn.
struct ip_mreqn tempRequest;
socklen_t requestLength = sizeof(tempRequest);
result = getsockopt(socket, IPPROTO_IP, IP_MULTICAST_IF, &tempRequest,
&requestLength);
interfaceIndex = tempRequest.imr_ifindex;
} else if (family == AF_INET6) {
// IPV6_MULTICAST_IF returns a pointer to an integer.
socklen_t requestLength = sizeof(interfaceIndex);
result = getsockopt(socket, IPPROTO_IPV6, IPV6_MULTICAST_IF,
&interfaceIndex, &requestLength);
} else {
errno = EAFNOSUPPORT;
return -1;
}
if (result == 0)
return interfaceIndex;
else
return -1;
}
/**
* Join/Leave the nominated multicast group on the specified socket.
* Implemented by setting the multicast 'add membership'/'drop membership'
* option at the HY_IPPROTO_IP level on the socket.
*
* Implementation note for multicast sockets in general:
*
* - This code is untested, because at the time of this writing multicast can't
* be properly tested on Android due to GSM routing restrictions. So it might
* or might not work.
*
* - The REUSEPORT socket option that Harmony employs is not supported on Linux
* and thus also not supported on Android. It's is not needed for multicast
* to work anyway (REUSEADDR should suffice).
*
* @param env pointer to the JNI library.
* @param socketP pointer to the hysocket to join/leave on.
* @param optVal pointer to the InetAddress, the multicast group to join/drop.
*
* @exception SocketException if an error occurs during the call
*/
static void mcastAddDropMembership(JNIEnv *env, int handle, jobject optVal,
int ignoreIF, int setSockOptVal) {
struct sockaddr_storage sockaddrP;
int result;
// By default, let the system decide which interface to use.
int interfaceIndex = 0;
/*
* Check whether we are getting an InetAddress or an Generic IPMreq. For now
* we support both so that we will not break the tests. If an InetAddress
* is passed in, only support IPv4 as obtaining an interface from an
* InetAddress is complex and should be done by the Java caller.
*/
if (env->IsInstanceOf (optVal, gCachedFields.iaddr_class)) {
/*
* optVal is an InetAddress. Construct a multicast request structure
* from this address. Support IPv4 only.
*/
struct ip_mreqn multicastRequest;
socklen_t length = sizeof(multicastRequest);
memset(&multicastRequest, 0, length);
// If ignoreIF is false, determine the index of the interface to use.
if (!ignoreIF) {
interfaceIndex = interfaceIndexFromMulticastSocket(handle);
multicastRequest.imr_ifindex = interfaceIndex;
if (interfaceIndex == -1) {
jniThrowSocketException(env, errno);
return;
}
}
// Convert the inetAddress to an IPv4 address structure.
if (!inetAddressToSocketAddress(env, optVal, 0, &sockaddrP)) {
return;
}
if (sockaddrP.ss_family != AF_INET) {
jniThrowSocketException(env, EAFNOSUPPORT);
return;
}
struct sockaddr_in *sin = (struct sockaddr_in *) &sockaddrP;
multicastRequest.imr_multiaddr = sin->sin_addr;
result = setsockopt(handle, IPPROTO_IP, setSockOptVal,
&multicastRequest, length);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
} else {
/*
* optVal is a GenericIPMreq object. Extract the relevant fields from
* it and construct a multicast request structure from these. Support
* both IPv4 and IPv6.
*/
jclass cls;
jfieldID multiaddrID;
jfieldID interfaceIdxID;
jobject multiaddr;
// Get the multicast address to join or leave.
cls = env->GetObjectClass(optVal);
multiaddrID = env->GetFieldID(cls, "multiaddr", "Ljava/net/InetAddress;");
multiaddr = env->GetObjectField(optVal, multiaddrID);
// Get the interface index to use.
if (! ignoreIF) {
interfaceIdxID = env->GetFieldID(cls, "interfaceIdx", "I");
interfaceIndex = env->GetIntField(optVal, interfaceIdxID);
}
LOGI("mcastAddDropMembership interfaceIndex=%i", interfaceIndex);
if (!inetAddressToSocketAddress(env, multiaddr, 0, &sockaddrP)) {
return;
}
int family = getSocketAddressFamily(handle);
// Handle IPv4 multicast on an IPv6 socket.
if (family == AF_INET6 && sockaddrP.ss_family == AF_INET) {
family = AF_INET;
}
struct ip_mreqn ipv4Request;
struct ipv6_mreq ipv6Request;
void *multicastRequest;
socklen_t requestLength;
int level;
switch (family) {
case AF_INET:
requestLength = sizeof(ipv4Request);
memset(&ipv4Request, 0, requestLength);
ipv4Request.imr_multiaddr =
((struct sockaddr_in *) &sockaddrP)->sin_addr;
ipv4Request.imr_ifindex = interfaceIndex;
multicastRequest = &ipv4Request;
level = IPPROTO_IP;
break;
case AF_INET6:
// setSockOptVal is passed in by the caller and may be IPv4-only
if (setSockOptVal == IP_ADD_MEMBERSHIP) {
setSockOptVal = IPV6_ADD_MEMBERSHIP;
}
if (setSockOptVal == IP_DROP_MEMBERSHIP) {
setSockOptVal == IPV6_DROP_MEMBERSHIP;
}
requestLength = sizeof(ipv6Request);
memset(&ipv6Request, 0, requestLength);
ipv6Request.ipv6mr_multiaddr =
((struct sockaddr_in6 *) &sockaddrP)->sin6_addr;
ipv6Request.ipv6mr_interface = interfaceIndex;
multicastRequest = &ipv6Request;
level = IPPROTO_IPV6;
break;
default:
jniThrowSocketException(env, EAFNOSUPPORT);
return;
}
/* join/drop the multicast address */
result = setsockopt(handle, level, setSockOptVal, multicastRequest,
requestLength);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
}
}
#endif // def ENABLE_MULTICAST
static bool initCachedFields(JNIEnv* env) {
memset(&gCachedFields, 0, sizeof(gCachedFields));
struct CachedFields *c = &gCachedFields;
struct classInfo {
jclass *clazz;
const char *name;
} classes[] = {
{&c->iaddr_class, "java/net/InetAddress"},
{&c->i4addr_class, "java/net/Inet4Address"},
{&c->genericipmreq_class, "org/apache/harmony/luni/net/GenericIPMreq"},
{&c->integer_class, "java/lang/Integer"},
{&c->boolean_class, "java/lang/Boolean"},
{&c->byte_class, "java/lang/Byte"},
{&c->socketimpl_class, "java/net/SocketImpl"},
{&c->dpack_class, "java/net/DatagramPacket"}
};
for (unsigned i = 0; i < sizeof(classes) / sizeof(classes[0]); i++) {
classInfo c = classes[i];
jclass tempClass = env->FindClass(c.name);
if (tempClass == NULL) return false;
*c.clazz = (jclass) env->NewGlobalRef(tempClass);
}
struct methodInfo {
jmethodID *method;
jclass clazz;
const char *name;
const char *signature;
bool isStatic;
} methods[] = {
{&c->i4addr_class_init, c->i4addr_class, "<init>", "([B)V", false},
{&c->integer_class_init, c->integer_class, "<init>", "(I)V", false},
{&c->boolean_class_init, c->boolean_class, "<init>", "(Z)V", false},
{&c->byte_class_init, c->byte_class, "<init>", "(B)V", false},
{&c->iaddr_getbyaddress, c->iaddr_class, "getByAddress",
"([B)Ljava/net/InetAddress;", true}
};
for (unsigned i = 0; i < sizeof(methods) / sizeof(methods[0]); i++) {
methodInfo m = methods[i];
if (m.isStatic) {
*m.method = env->GetStaticMethodID(m.clazz, m.name, m.signature);
} else {
*m.method = env->GetMethodID(m.clazz, m.name, m.signature);
}
if (*m.method == NULL) return false;
}
struct fieldInfo {
jfieldID *field;
jclass clazz;
const char *name;
const char *type;
} fields[] = {
{&c->iaddr_ipaddress, c->iaddr_class, "ipaddress", "[B"},
{&c->integer_class_value, c->integer_class, "value", "I"},
{&c->boolean_class_value, c->boolean_class, "value", "Z"},
{&c->byte_class_value, c->byte_class, "value", "B"},
{&c->socketimpl_port, c->socketimpl_class, "port", "I"},
{&c->socketimpl_address, c->socketimpl_class, "address",
"Ljava/net/InetAddress;"},
{&c->dpack_address, c->dpack_class, "address",
"Ljava/net/InetAddress;"},
{&c->dpack_port, c->dpack_class, "port", "I"},
{&c->dpack_length, c->dpack_class, "length", "I"}
};
for (unsigned i = 0; i < sizeof(fields) / sizeof(fields[0]); i++) {
fieldInfo f = fields[i];
*f.field = env->GetFieldID(f.clazz, f.name, f.type);
if (*f.field == NULL) return false;
}
return true;
}
/**
* Helper function to create a socket of the specified type and bind it to a
* Java file descriptor.
*
* @param fileDescriptor the file descriptor to bind the socket to
* @param type the socket type to create, e.g., SOCK_STREAM
* @throws SocketException an error occurred when creating the socket
*
* @return the socket file descriptor. On failure, an exception is thrown and
* a negative value is returned.
*
*/
static int createSocketFileDescriptor(JNIEnv* env, jobject fileDescriptor,
int type) {
if (fileDescriptor == NULL) {
throwNullPointerException(env);
errno = EBADF;
return -1;
}
int sock;
sock = socket(PF_INET6, type, 0);
if (sock < 0 && errno == EAFNOSUPPORT) {
sock = socket(PF_INET, type, 0);
}
if (sock < 0) {
jniThrowSocketException(env, errno);
return sock;
}
jniSetFileDescriptorOfFD(env, fileDescriptor, sock);
return sock;
}
static void osNetworkSystem_createStreamSocketImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jboolean preferIPv4Stack) {
// LOGD("ENTER createSocketImpl");
createSocketFileDescriptor(env, fileDescriptor, SOCK_STREAM);
}
static void osNetworkSystem_createDatagramSocketImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jboolean preferIPv4Stack) {
// LOGD("ENTER createDatagramSocketImpl");
createSocketFileDescriptor(env, fileDescriptor, SOCK_DGRAM);
}
static jint osNetworkSystem_readSocketDirectImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jint address, jint count, jint timeout) {
// LOGD("ENTER readSocketDirectImpl");
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return 0;
}
if (timeout != 0) {
int result = selectWait(fd, timeout * 1000);
if (result < 0) {
return 0;
}
}
jbyte* dst = reinterpret_cast<jbyte*>(static_cast<uintptr_t>(address));
ssize_t bytesReceived =
TEMP_FAILURE_RETRY(recv(fd, dst, count, SOCKET_NOFLAGS));
if (bytesReceived == 0) {
return -1;
} else if (bytesReceived == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
// We were asked to read a non-blocking socket with no data
// available, so report "no bytes read".
return 0;
} else {
jniThrowSocketException(env, errno);
return 0;
}
}
return bytesReceived;
}
static jint osNetworkSystem_readSocketImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jbyteArray byteArray, jint offset, jint count,
jint timeout) {
// LOGD("ENTER readSocketImpl");
jbyte* bytes = env->GetByteArrayElements(byteArray, NULL);
if (bytes == NULL) {
return -1;
}
jint address =
static_cast<jint>(reinterpret_cast<uintptr_t>(bytes + offset));
int result = osNetworkSystem_readSocketDirectImpl(env, clazz,
fileDescriptor, address, count, timeout);
env->ReleaseByteArrayElements(byteArray, bytes, 0);
return result;
}
static jint osNetworkSystem_writeSocketDirectImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jint address, jint offset, jint count) {
// LOGD("ENTER writeSocketDirectImpl");
if (count <= 0) {
return 0;
}
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return 0;
}
jbyte* message = reinterpret_cast<jbyte*>(static_cast<uintptr_t>(address + offset));
int bytesSent = send(fd, message, count, SOCKET_NOFLAGS);
if (bytesSent == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
// We were asked to write to a non-blocking socket, but were told
// it would block, so report "no bytes written".
return 0;
} else {
jniThrowSocketException(env, errno);
return 0;
}
}
return bytesSent;
}
static jint osNetworkSystem_writeSocketImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jbyteArray byteArray, jint offset, jint count) {
// LOGD("ENTER writeSocketImpl");
jbyte* bytes = env->GetByteArrayElements(byteArray, NULL);
if (bytes == NULL) {
return -1;
}
jint address = static_cast<jint>(reinterpret_cast<uintptr_t>(bytes));
int result = osNetworkSystem_writeSocketDirectImpl(env, clazz,
fileDescriptor, address, offset, count);
env->ReleaseByteArrayElements(byteArray, bytes, 0);
return result;
}
static void osNetworkSystem_setNonBlockingImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jboolean nonblocking) {
// LOGD("ENTER setNonBlockingImpl");
int handle;
if (!jniGetFd(env, fileDescriptor, handle)) {
return;
}
int block = nonblocking;
int rc = ioctl(handle, FIONBIO, &block);
if (rc == -1) {
jniThrowSocketException(env, errno);
}
}
static jint osNetworkSystem_connectWithTimeoutSocketImpl(JNIEnv* env,
jclass clazz, jobject fileDescriptor, jint timeout, jint trafficClass,
jobject inetAddr, jint port, jint step, jbyteArray passContext) {
// LOGD("ENTER connectWithTimeoutSocketImpl");
sockaddr_storage address;
if (!inetAddressToSocketAddress(env, inetAddr, port, &address)) {
return -1;
}
int handle;
if (!jniGetFd(env, fileDescriptor, handle)) {
return -1;
}
jbyte* context = env->GetByteArrayElements(passContext, NULL);
int result = 0;
switch (step) {
case SOCKET_CONNECT_STEP_START:
result = sockConnectWithTimeout(handle, address, 0,
SOCKET_STEP_START, context);
break;
case SOCKET_CONNECT_STEP_CHECK:
result = sockConnectWithTimeout(handle, address, timeout,
SOCKET_STEP_CHECK, context);
break;
default:
assert(false);
}
env->ReleaseByteArrayElements(passContext, context, 0);
if (result == 0) {
/* connected , so stop here */
sockConnectWithTimeout(handle, address, 0, SOCKET_STEP_DONE, NULL);
} else if (result != SOCKERR_NOTCONNECTED) {
/* can not connect... */
sockConnectWithTimeout(handle, address, 0, SOCKET_STEP_DONE, NULL);
if (result == SOCKERR_EACCES) {
jniThrowException(env, "java/lang/SecurityException",
netLookupErrorString(result));
} else {
jniThrowException(env, "java/net/ConnectException",
netLookupErrorString(result));
}
}
return result;
}
static void osNetworkSystem_connectStreamWithTimeoutSocketImpl(JNIEnv* env,
jclass clazz, jobject fileDescriptor, jint remotePort, jint timeout,
jint trafficClass, jobject inetAddr) {
// LOGD("ENTER connectStreamWithTimeoutSocketImpl");
int result = 0;
struct sockaddr_storage address;
jbyte *context = NULL;
int remainingTimeout = timeout;
int passedTimeout = 0;
int finishTime = 0;
int blocking = 0;
char hasTimeout = timeout > 0;
/* if a timeout was specified calculate the finish time value */
if (hasTimeout) {
finishTime = time_msec_clock() + (int) timeout;
}
int handle;
if (!jniGetFd(env, fileDescriptor, handle)) {
return;
}
if (!inetAddressToSocketAddress(env, inetAddr, remotePort, &address)) {
return;
}
/*
* we will be looping checking for when we are connected so allocate
* the descriptor sets that we will use
*/
context =(jbyte *) malloc(sizeof(struct selectFDSet));
if (context == NULL) {
jniThrowException(env, "java/lang/OutOfMemoryError", "native heap");
return;
}
result = sockConnectWithTimeout(handle, address, 0, SOCKET_STEP_START, context);
if (0 == result) {
/* ok we connected right away so we are done */
sockConnectWithTimeout(handle, address, 0, SOCKET_STEP_DONE, context);
goto bail;
} else if (result != SOCKERR_NOTCONNECTED) {
sockConnectWithTimeout(handle, address, 0, SOCKET_STEP_DONE,
context);
/* we got an error other than NOTCONNECTED so we cannot continue */
if (SOCKERR_EACCES == result) {
jniThrowException(env, "java/lang/SecurityException",
netLookupErrorString(result));
} else {
throwSocketException(env, result);
}
goto bail;
}
while (SOCKERR_NOTCONNECTED == result) {
passedTimeout = remainingTimeout;
/*
* ok now try and connect. Depending on the platform this may sleep
* for up to passedTimeout milliseconds
*/
result = sockConnectWithTimeout(handle, address, passedTimeout,
SOCKET_STEP_CHECK, context);
/*
* now check if the socket is still connected.
* Do it here as some platforms seem to think they
* are connected if the socket is closed on them.
*/
handle = jniGetFDFromFileDescriptor(env, fileDescriptor);
if (handle == -1) {
sockConnectWithTimeout(handle, address, 0,
SOCKET_STEP_DONE, context);
jniThrowSocketException(env, EBADF);
goto bail;
}
/*
* check if we are now connected,
* if so we can finish the process and return
*/
if (0 == result) {
sockConnectWithTimeout(handle, address, 0,
SOCKET_STEP_DONE, context);
goto bail;
}
/*
* if the error is SOCKERR_NOTCONNECTED then we have not yet
* connected and we may not be done yet
*/
if (SOCKERR_NOTCONNECTED == result) {
/* check if the timeout has expired */
if (hasTimeout) {
remainingTimeout = finishTime - time_msec_clock();
if (remainingTimeout <= 0) {
sockConnectWithTimeout(handle, address, 0,
SOCKET_STEP_DONE, context);
jniThrowSocketTimeoutException(env, ENOTCONN);
goto bail;
}
} else {
remainingTimeout = 100;
}
} else {
sockConnectWithTimeout(handle, address, remainingTimeout,
SOCKET_STEP_DONE, context);
if ((SOCKERR_CONNRESET == result) ||
(SOCKERR_CONNECTION_REFUSED == result) ||
(SOCKERR_ADDRNOTAVAIL == result) ||
(SOCKERR_ADDRINUSE == result) ||
(SOCKERR_ENETUNREACH == result)) {
jniThrowException(env, "java/net/ConnectException",
netLookupErrorString(result));
} else if (SOCKERR_EACCES == result) {
jniThrowException(env, "java/lang/SecurityException",
netLookupErrorString(result));
} else {
throwSocketException(env, result);
}
goto bail;
}
}
bail:
/* free the memory for the FD set */
if (context != NULL) {
free(context);
}
}
static void osNetworkSystem_socketBindImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jint port, jobject inetAddress) {
// LOGD("ENTER socketBindImpl");
sockaddr_storage socketAddress;
if (!inetAddressToSocketAddress(env, inetAddress, port, &socketAddress)) {
return;
}
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return;
}
sockaddr_storage tmp;
const sockaddr* realAddress = convertIpv4ToMapped(fd, &socketAddress, &tmp, false);
int rc = TEMP_FAILURE_RETRY(bind(fd, realAddress, sizeof(sockaddr_storage)));
if (rc == -1) {
jniThrowBindException(env, errno);
}
}
static void osNetworkSystem_listenStreamSocketImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jint backlog) {
// LOGD("ENTER listenStreamSocketImpl");
int handle;
if (!jniGetFd(env, fileDescriptor, handle)) {
return;
}
int rc = listen(handle, backlog);
if (rc == -1) {
jniThrowSocketException(env, errno);
return;
}
}
static jint osNetworkSystem_availableStreamImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor) {
// LOGD("ENTER availableStreamImpl");
int handle;
if (!jniGetFd(env, fileDescriptor, handle)) {
return 0;
}
int result;
do {
result = selectWait(handle, 1);
if (SOCKERR_TIMEOUT == result) {
// The read operation timed out, so answer 0 bytes available
return 0;
} else if (SOCKERR_INTERRUPTED == result) {
continue;
} else if (0 > result) {
throwSocketException(env, result);
return 0;
}
} while (SOCKERR_INTERRUPTED == result);
char message[2048];
result = recv(handle, (jbyte *) message, sizeof(message), MSG_PEEK);
if (0 > result) {
jniThrowSocketException(env, errno);
return 0;
}
return result;
}
static void osNetworkSystem_acceptSocketImpl(JNIEnv* env, jclass,
jobject serverFileDescriptor,
jobject newSocket, jobject clientFileDescriptor, jint timeout) {
// LOGD("ENTER acceptSocketImpl");
if (newSocket == NULL) {
throwNullPointerException(env);
return;
}
int rc = pollSelectWait(env, serverFileDescriptor, timeout);
if (rc < 0) {
return;
}
int serverFd;
if (!jniGetFd(env, serverFileDescriptor, serverFd)) {
return;
}
sockaddr_storage sa;
socklen_t addrlen = sizeof(sa);
int clientFd = TEMP_FAILURE_RETRY(accept(serverFd,
reinterpret_cast<sockaddr*>(&sa), &addrlen));
if (clientFd == -1) {
jniThrowSocketException(env, errno);
return;
}
/*
* For network sockets, put the peer address and port in instance variables.
* We don't bother to do this for UNIX domain sockets, since most peers are
* anonymous anyway.
*/
if (sa.ss_family == AF_INET || sa.ss_family == AF_INET6) {
jobject inetAddress = socketAddressToInetAddress(env, &sa);
if (inetAddress == NULL) {
close(clientFd);
return;
}
env->SetObjectField(newSocket,
gCachedFields.socketimpl_address, inetAddress);
int port = getSocketAddressPort(&sa);
env->SetIntField(newSocket, gCachedFields.socketimpl_port, port);
}
jniSetFileDescriptorOfFD(env, clientFileDescriptor, clientFd);
}
static jboolean osNetworkSystem_supportsUrgentDataImpl(JNIEnv* env,
jclass clazz, jobject fileDescriptor) {
// LOGD("ENTER supportsUrgentDataImpl");
// TODO(enh): do we really need to exclude the invalid file descriptor case?
int fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
return (fd == -1) ? JNI_FALSE : JNI_TRUE;
}
static void osNetworkSystem_sendUrgentDataImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jbyte value) {
// LOGD("ENTER sendUrgentDataImpl");
int handle;
if (!jniGetFd(env, fileDescriptor, handle)) {
return;
}
int rc = send(handle, &value, 1, MSG_OOB);
if (rc == -1) {
jniThrowSocketException(env, errno);
}
}
static void osNetworkSystem_connectDatagramImpl2(JNIEnv* env, jclass,
jobject fileDescriptor, jint port, jint trafficClass, jobject inetAddress) {
// LOGD("ENTER connectDatagramImpl2");
sockaddr_storage sockAddr;
if (!inetAddressToSocketAddress(env, inetAddress, port, &sockAddr)) {
return;
}
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return;
}
int ret = doConnect(fd, &sockAddr);
if (ret < 0) {
jniThrowSocketException(env, errno);
}
}
static void osNetworkSystem_disconnectDatagramImpl(JNIEnv* env, jclass,
jobject fileDescriptor) {
// LOGD("ENTER disconnectDatagramImpl");
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return;
}
sockaddr_storage sockAddr;
memset(&sockAddr, 0, sizeof(sockAddr));
sockAddr.ss_family = AF_UNSPEC;
int result = doConnect(fd, &sockAddr);
if (result < 0) {
jniThrowSocketException(env, errno);
}
}
static void osNetworkSystem_setInetAddressImpl(JNIEnv* env, jobject,
jobject sender, jbyteArray address) {
// LOGD("ENTER setInetAddressImpl");
env->SetObjectField(sender, gCachedFields.iaddr_ipaddress, address);
}
static jint osNetworkSystem_peekDatagramImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jobject sender, jint receiveTimeout) {
// LOGD("ENTER peekDatagramImpl");
int result = pollSelectWait(env, fileDescriptor, receiveTimeout);
if (result < 0) {
return 0;
}
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return 0;
}
sockaddr_storage sockAddr;
socklen_t sockAddrLen = sizeof(sockAddr);
ssize_t length = TEMP_FAILURE_RETRY(recvfrom(fd, NULL, 0, MSG_PEEK,
reinterpret_cast<sockaddr*>(&sockAddr), &sockAddrLen));
if (length == -1) {
jniThrowSocketException(env, errno);
return 0;
}
// We update the byte[] in the 'sender' InetAddress, and return the port.
// This awful API is public in the RI, so there's no point returning
// InetSocketAddress here instead.
jbyteArray senderAddressArray = socketAddressToByteArray(env, &sockAddr);
if (sender == NULL) {
return -1;
}
osNetworkSystem_setInetAddressImpl(env, NULL, sender, senderAddressArray);
return getSocketAddressPort(&sockAddr);
}
static jint osNetworkSystem_receiveDatagramDirectImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jobject packet, jint address, jint offset,
jint length, jint receiveTimeout, jboolean peek) {
// LOGD("ENTER receiveDatagramDirectImpl");
int result = pollSelectWait(env, fileDescriptor, receiveTimeout);
if (result < 0) {
return 0;
}
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return 0;
}
char* buf =
reinterpret_cast<char*>(static_cast<uintptr_t>(address + offset));
const int mode = peek ? MSG_PEEK : 0;
sockaddr_storage sockAddr;
socklen_t sockAddrLen = sizeof(sockAddr);
ssize_t actualLength = TEMP_FAILURE_RETRY(recvfrom(fd, buf, length, mode,
reinterpret_cast<sockaddr*>(&sockAddr), &sockAddrLen));
if (actualLength == -1) {
jniThrowSocketException(env, errno);
return 0;
}
if (packet != NULL) {
jbyteArray addr = socketAddressToByteArray(env, &sockAddr);
if (addr == NULL) {
return 0;
}
int port = getSocketAddressPort(&sockAddr);
jobject sender = env->CallStaticObjectMethod(
gCachedFields.iaddr_class, gCachedFields.iaddr_getbyaddress,
addr);
env->SetObjectField(packet, gCachedFields.dpack_address, sender);
env->SetIntField(packet, gCachedFields.dpack_port, port);
env->SetIntField(packet, gCachedFields.dpack_length,
(jint) actualLength);
}
return (jint) actualLength;
}
static jint osNetworkSystem_receiveDatagramImpl(JNIEnv* env, jclass clazz,
jobject fd, jobject packet, jbyteArray data, jint offset, jint length,
jint receiveTimeout, jboolean peek) {
// LOGD("ENTER receiveDatagramImpl");
int localLength = (length < 65536) ? length : 65536;
jbyte *bytes = (jbyte*) malloc(localLength);
if (bytes == NULL) {
jniThrowException(env, "java/lang/OutOfMemoryError",
"couldn't allocate enough memory for receiveDatagram");
return 0;
}
int actualLength = osNetworkSystem_receiveDatagramDirectImpl(env, clazz, fd,
packet, (jint)bytes, 0, localLength, receiveTimeout, peek);
if (actualLength > 0) {
env->SetByteArrayRegion(data, offset, actualLength, bytes);
}
free(bytes);
return actualLength;
}
static jint osNetworkSystem_recvConnectedDatagramDirectImpl(JNIEnv* env,
jclass clazz, jobject fileDescriptor, jobject packet,
jint address, jint offset, jint length,
jint receiveTimeout, jboolean peek) {
// LOGD("ENTER receiveConnectedDatagramDirectImpl");
int result = pollSelectWait(env, fileDescriptor, receiveTimeout);
if (result < 0) {
return 0;
}
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return 0;
}
char* buf = reinterpret_cast<char*>(static_cast<uintptr_t>(address + offset));
int mode = peek ? MSG_PEEK : 0;
int actualLength = recvfrom(fd, buf, length, mode, NULL, NULL);
if (actualLength < 0) {
jniThrowException(env, "java/net/PortUnreachableException", "");
return 0;
}
if (packet != NULL) {
env->SetIntField(packet, gCachedFields.dpack_length, actualLength);
}
return actualLength;
}
static jint osNetworkSystem_recvConnectedDatagramImpl(JNIEnv* env, jclass clazz,
jobject fd, jobject packet, jbyteArray data, jint offset, jint length,
jint receiveTimeout, jboolean peek) {
// LOGD("ENTER receiveConnectedDatagramImpl");
int localLength = (length < 65536) ? length : 65536;
jbyte *bytes = (jbyte*) malloc(localLength);
if (bytes == NULL) {
jniThrowException(env, "java/lang/OutOfMemoryError",
"couldn't allocate enough memory for recvConnectedDatagram");
return 0;
}
int actualLength = osNetworkSystem_recvConnectedDatagramDirectImpl(env,
clazz, fd, packet, (jint)bytes, 0, localLength,
receiveTimeout, peek);
if (actualLength > 0) {
env->SetByteArrayRegion(data, offset, actualLength, bytes);
}
free(bytes);
return actualLength;
}
static jint osNetworkSystem_sendDatagramDirectImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jint address, jint offset, jint length,
jint port,
jboolean bindToDevice, jint trafficClass, jobject inetAddress) {
// LOGD("ENTER sendDatagramDirectImpl");
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return -1;
}
sockaddr_storage receiver;
if (!inetAddressToSocketAddress(env, inetAddress, port, &receiver)) {
return -1;
}
char* buf =
reinterpret_cast<char*>(static_cast<uintptr_t>(address + offset));
ssize_t bytesSent = TEMP_FAILURE_RETRY(sendto(fd, buf, length,
SOCKET_NOFLAGS,
reinterpret_cast<sockaddr*>(&receiver), sizeof(receiver)));
if (bytesSent == -1) {
if (errno == ECONNRESET || errno == ECONNREFUSED) {
return 0;
} else {
jniThrowSocketException(env, errno);
}
}
return bytesSent;
}
static jint osNetworkSystem_sendDatagramImpl(JNIEnv* env, jclass clazz,
jobject fd, jbyteArray data, jint offset, jint length, jint port,
jboolean bindToDevice, jint trafficClass, jobject inetAddress) {
// LOGD("ENTER sendDatagramImpl");
jbyte *bytes = env->GetByteArrayElements(data, NULL);
int actualLength = osNetworkSystem_sendDatagramDirectImpl(env, clazz, fd,
(jint)bytes, offset, length, port, bindToDevice, trafficClass,
inetAddress);
env->ReleaseByteArrayElements(data, bytes, JNI_ABORT);
return actualLength;
}
static jint osNetworkSystem_sendConnectedDatagramDirectImpl(JNIEnv* env,
jclass clazz, jobject fileDescriptor,
jint address, jint offset, jint length,
jboolean bindToDevice) {
// LOGD("ENTER sendConnectedDatagramDirectImpl");
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return 0;
}
char* buf =
reinterpret_cast<char*>(static_cast<uintptr_t>(address + offset));
ssize_t bytesSent = TEMP_FAILURE_RETRY(send(fd, buf, length, 0));
if (bytesSent == -1) {
if (errno == ECONNRESET || errno == ECONNREFUSED) {
return 0;
} else {
jniThrowSocketException(env, errno);
}
}
return bytesSent;
}
static jint osNetworkSystem_sendConnectedDatagramImpl(JNIEnv* env, jclass clazz,
jobject fd, jbyteArray data, jint offset, jint length,
jboolean bindToDevice) {
// LOGD("ENTER sendConnectedDatagramImpl");
jbyte *bytes = env->GetByteArrayElements(data, NULL);
int actualLength = osNetworkSystem_sendConnectedDatagramDirectImpl(env,
clazz, fd, (jint)bytes, offset, length, bindToDevice);
env->ReleaseByteArrayElements(data, bytes, JNI_ABORT);
return actualLength;
}
static void osNetworkSystem_createServerStreamSocketImpl(JNIEnv* env,
jclass clazz, jobject fileDescriptor, jboolean preferIPv4Stack) {
// LOGD("ENTER createServerStreamSocketImpl");
int handle = createSocketFileDescriptor(env, fileDescriptor, SOCK_STREAM);
if (handle < 0) {
return;
}
int value = 1;
setsockopt(handle, SOL_SOCKET, SO_REUSEADDR, &value, sizeof(int));
}
static void doShutdown(JNIEnv* env, jobject fileDescriptor, int how) {
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return;
}
int rc = shutdown(fd, how);
if (rc == -1) {
jniThrowSocketException(env, errno);
}
}
static void osNetworkSystem_shutdownInputImpl(JNIEnv* env, jobject,
jobject fileDescriptor) {
doShutdown(env, fileDescriptor, SHUT_RD);
}
static void osNetworkSystem_shutdownOutputImpl(JNIEnv* env, jobject,
jobject fileDescriptor) {
doShutdown(env, fileDescriptor, SHUT_WR);
}
static jint osNetworkSystem_sendDatagramImpl2(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jbyteArray data, jint offset, jint length,
jint port, jobject inetAddress) {
// LOGD("ENTER sendDatagramImpl2");
sockaddr_storage sockAddr;
if (inetAddress != NULL) {
if (!inetAddressToSocketAddress(env, inetAddress, port, &sockAddr)) {
return -1;
}
}
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return 0;
}
jbyte* message = (jbyte*) malloc(length * sizeof(jbyte));
if (message == NULL) {
jniThrowException(env, "java/lang/OutOfMemoryError",
"couldn't allocate enough memory for readSocket");
return 0;
}
env->GetByteArrayRegion(data, offset, length, message);
int totalBytesSent = 0;
while (totalBytesSent < length) {
ssize_t bytesSent = TEMP_FAILURE_RETRY(sendto(fd,
message + totalBytesSent, length - totalBytesSent,
SOCKET_NOFLAGS,
reinterpret_cast<sockaddr*>(&sockAddr), sizeof(sockAddr)));
if (bytesSent == -1) {
jniThrowSocketException(env, errno);
free(message);
return 0;
}
totalBytesSent += bytesSent;
}
free(message);
return totalBytesSent;
}
static bool initFdSet(JNIEnv* env, jobjectArray fdArray, jint count, fd_set* fdSet, int* maxFd) {
for (int i = 0; i < count; ++i) {
jobject fileDescriptor = env->GetObjectArrayElement(fdArray, i);
if (fileDescriptor == NULL) {
return false;
}
const int fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
if (fd < 0 || fd > 1024) {
LOGE("selectImpl: ignoring invalid fd %i", fd);
continue;
}
FD_SET(fd, fdSet);
if (fd > *maxFd) {
*maxFd = fd;
}
}
return true;
}
/*
* Note: fdSet has to be non-const because although on Linux FD_ISSET() is sane
* and takes a const fd_set*, it takes fd_set* on Mac OS. POSIX is not on our
* side here:
* http://www.opengroup.org/onlinepubs/000095399/functions/select.html
*/
static bool translateFdSet(JNIEnv* env, jobjectArray fdArray, jint count, fd_set& fdSet, jint* flagArray, size_t offset, jint op) {
for (int i = 0; i < count; ++i) {
jobject fileDescriptor = env->GetObjectArrayElement(fdArray, i);
if (fileDescriptor == NULL) {
return false;
}
const int fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
const bool valid = fd >= 0 && fd < 1024;
if (valid && FD_ISSET(fd, &fdSet)) {
flagArray[i + offset] = op;
} else {
flagArray[i + offset] = SOCKET_OP_NONE;
}
}
return true;
}
static jboolean osNetworkSystem_selectImpl(JNIEnv* env, jclass clazz,
jobjectArray readFDArray, jobjectArray writeFDArray, jint countReadC,
jint countWriteC, jintArray outFlags, jlong timeoutMs) {
// LOGD("ENTER selectImpl");
// Initialize the fd_sets.
int maxFd = -1;
fd_set readFds;
fd_set writeFds;
FD_ZERO(&readFds);
FD_ZERO(&writeFds);
bool initialized = initFdSet(env, readFDArray, countReadC, &readFds, &maxFd) &&
initFdSet(env, writeFDArray, countWriteC, &writeFds, &maxFd);
if (!initialized) {
return -1;
}
// Initialize the timeout, if any.
timeval tv;
timeval* tvp = NULL;
if (timeoutMs >= 0) {
tv = toTimeval(timeoutMs);
tvp = &tv;
}
// Perform the select.
int result = select(maxFd + 1, &readFds, &writeFds, NULL, tvp);
if (result == 0) {
// Timeout.
return JNI_FALSE;
} else if (result == -1) {
// Error.
if (errno == EINTR) {
return JNI_FALSE;
} else {
jniThrowSocketException(env, errno);
return JNI_FALSE;
}
}
// Translate the result into the int[] we're supposed to fill in.
jint* flagArray = env->GetIntArrayElements(outFlags, NULL);
if (flagArray == NULL) {
return JNI_FALSE;
}
bool okay = translateFdSet(env, readFDArray, countReadC, readFds, flagArray, 0, SOCKET_OP_READ) &&
translateFdSet(env, writeFDArray, countWriteC, writeFds, flagArray, countReadC, SOCKET_OP_WRITE);
env->ReleaseIntArrayElements(outFlags, flagArray, 0);
return okay;
}
static jobject osNetworkSystem_getSocketLocalAddressImpl(JNIEnv* env,
jclass, jobject fileDescriptor) {
// LOGD("ENTER getSocketLocalAddressImpl");
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return NULL;
}
sockaddr_storage addr;
socklen_t addrLen = sizeof(addr);
memset(&addr, 0, addrLen);
int rc = getsockname(fd, (sockaddr*) &addr, &addrLen);
if (rc == -1) {
// TODO: the public API doesn't allow failure, so this whole method
// represents a broken design. In practice, though, getsockname can't
// fail unless we give it invalid arguments.
LOGE("getsockname failed: %s (errno=%i)", strerror(errno), errno);
return NULL;
}
return socketAddressToInetAddress(env, &addr);
}
static jint osNetworkSystem_getSocketLocalPortImpl(JNIEnv* env, jclass,
jobject fileDescriptor) {
// LOGD("ENTER getSocketLocalPortImpl");
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return 0;
}
sockaddr_storage addr;
socklen_t addrLen = sizeof(addr);
memset(&addr, 0, addrLen);
int rc = getsockname(fd, (sockaddr*) &addr, &addrLen);
if (rc == -1) {
// TODO: the public API doesn't allow failure, so this whole method
// represents a broken design. In practice, though, getsockname can't
// fail unless we give it invalid arguments.
LOGE("getsockname failed: %s (errno=%i)", strerror(errno), errno);
return 0;
}
return getSocketAddressPort(&addr);
}
static jobject osNetworkSystem_getSocketOptionImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jint anOption) {
// LOGD("ENTER getSocketOptionImpl");
int intValue = 0;
socklen_t intSize = sizeof(int);
int result;
struct sockaddr_storage sockVal;
socklen_t sockSize = sizeof(sockVal);
int handle;
if (!jniGetFd(env, fileDescriptor, handle)) {
return 0;
}
switch ((int) anOption & 0xffff) {
case JAVASOCKOPT_SO_LINGER: {
struct linger lingr;
socklen_t size = sizeof(struct linger);
result = getsockopt(handle, SOL_SOCKET, SO_LINGER, &lingr, &size);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
if (!lingr.l_onoff) {
intValue = -1;
} else {
intValue = lingr.l_linger;
}
return newJavaLangInteger(env, intValue);
}
case JAVASOCKOPT_TCP_NODELAY: {
if ((anOption >> 16) & BROKEN_TCP_NODELAY) {
return NULL;
}
result = getsockopt(handle, IPPROTO_TCP, TCP_NODELAY, &intValue, &intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangBoolean(env, intValue);
}
case JAVASOCKOPT_SO_SNDBUF: {
result = getsockopt(handle, SOL_SOCKET, SO_SNDBUF, &intValue, &intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangInteger(env, intValue);
}
case JAVASOCKOPT_SO_RCVBUF: {
result = getsockopt(handle, SOL_SOCKET, SO_RCVBUF, &intValue, &intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangInteger(env, intValue);
}
case JAVASOCKOPT_SO_BROADCAST: {
result = getsockopt(handle, SOL_SOCKET, SO_BROADCAST, &intValue, &intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangBoolean(env, intValue);
}
case JAVASOCKOPT_SO_REUSEADDR: {
result = getsockopt(handle, SOL_SOCKET, SO_REUSEADDR, &intValue, &intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangBoolean(env, intValue);
}
case JAVASOCKOPT_SO_KEEPALIVE: {
result = getsockopt(handle, SOL_SOCKET, SO_KEEPALIVE, &intValue, &intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangBoolean(env, intValue);
}
case JAVASOCKOPT_SO_OOBINLINE: {
result = getsockopt(handle, SOL_SOCKET, SO_OOBINLINE, &intValue, &intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangBoolean(env, intValue);
}
case JAVASOCKOPT_IP_TOS: {
result = getOrSetSocketOption(SOCKOPT_GET, handle, IP_TOS,
IPV6_TCLASS, &intValue, &intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangInteger(env, intValue);
}
case JAVASOCKOPT_SO_RCVTIMEOUT: {
struct timeval timeout;
socklen_t size = sizeof(timeout);
result = getsockopt(handle, SOL_SOCKET, SO_RCVTIMEO, &timeout, &size);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangInteger(env, toMs(timeout));
}
#ifdef ENABLE_MULTICAST
case JAVASOCKOPT_MCAST_TTL: {
if ((anOption >> 16) & BROKEN_MULTICAST_TTL) {
return newJavaLangByte(env, 0);
}
// Java uses a byte to store the TTL, but the kernel uses an int.
result = getOrSetSocketOption(SOCKOPT_GET, handle, IP_MULTICAST_TTL,
IPV6_MULTICAST_HOPS, &intValue,
&intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangByte(env, (jbyte)(intValue & 0xFF));
}
case JAVASOCKOPT_IP_MULTICAST_IF: {
if ((anOption >> 16) & BROKEN_MULTICAST_IF) {
return NULL;
}
result = getsockopt(handle, IPPROTO_IP, IP_MULTICAST_IF,
&sockVal, &sockSize);
if (result == -1) {
jniThrowSocketException(env, errno);
return NULL;
}
if (sockVal.ss_family != AF_INET) {
// Java expects an AF_INET INADDR_ANY, but Linux just returns AF_UNSPEC.
jbyteArray inAddrAny = env->NewByteArray(4); // { 0, 0, 0, 0 }
return byteArrayToInetAddress(env, inAddrAny);
}
return socketAddressToInetAddress(env, &sockVal);
}
case JAVASOCKOPT_IP_MULTICAST_IF2: {
if ((anOption >> 16) & BROKEN_MULTICAST_IF) {
return NULL;
}
struct ip_mreqn multicastRequest;
int interfaceIndex = 0;
socklen_t optionLength;
int addressFamily = getSocketAddressFamily(handle);
switch (addressFamily) {
case AF_INET:
optionLength = sizeof(multicastRequest);
result = getsockopt(handle, IPPROTO_IP, IP_MULTICAST_IF,
&multicastRequest, &optionLength);
if (result == 0)
interfaceIndex = multicastRequest.imr_ifindex;
break;
case AF_INET6:
optionLength = sizeof(interfaceIndex);
result = getsockopt(handle, IPPROTO_IPV6, IPV6_MULTICAST_IF,
&interfaceIndex, &optionLength);
break;
default:
jniThrowSocketException(env, EAFNOSUPPORT);
return NULL;
}
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangInteger(env, interfaceIndex);
}
case JAVASOCKOPT_IP_MULTICAST_LOOP: {
result = getOrSetSocketOption(SOCKOPT_GET, handle,
IP_MULTICAST_LOOP,
IPV6_MULTICAST_LOOP, &intValue,
&intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return NULL;
}
return newJavaLangBoolean(env, intValue);
}
#else
case JAVASOCKOPT_MCAST_TTL:
case JAVASOCKOPT_IP_MULTICAST_IF:
case JAVASOCKOPT_IP_MULTICAST_IF2:
case JAVASOCKOPT_IP_MULTICAST_LOOP: {
jniThrowException(env, "java/lang/UnsupportedOperationException", NULL);
return NULL;
}
#endif // def ENABLE_MULTICAST
default: {
jniThrowSocketException(env, ENOPROTOOPT);
return NULL;
}
}
}
static void osNetworkSystem_setSocketOptionImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor, jint anOption, jobject optVal) {
// LOGD("ENTER setSocketOptionImpl");
int result;
int intVal;
socklen_t intSize = sizeof(int);
struct sockaddr_storage sockVal;
int sockSize = sizeof(sockVal);
if (env->IsInstanceOf(optVal, gCachedFields.integer_class)) {
intVal = (int) env->GetIntField(optVal, gCachedFields.integer_class_value);
} else if (env->IsInstanceOf(optVal, gCachedFields.boolean_class)) {
intVal = (int) env->GetBooleanField(optVal, gCachedFields.boolean_class_value);
} else if (env->IsInstanceOf(optVal, gCachedFields.byte_class)) {
// TTL uses a byte in Java, but the kernel still wants an int.
intVal = (int) env->GetByteField(optVal, gCachedFields.byte_class_value);
} else if (env->IsInstanceOf(optVal, gCachedFields.iaddr_class)) {
if (!inetAddressToSocketAddress(env, optVal, 0, &sockVal)) {
return;
}
} else if (env->IsInstanceOf(optVal, gCachedFields.genericipmreq_class)) {
// we'll use optVal directly
} else {
jniThrowSocketException(env, ENOPROTOOPT);
return;
}
int handle;
if (!jniGetFd(env, fileDescriptor, handle)) {
return;
}
switch ((int) anOption & 0xffff) {
case JAVASOCKOPT_SO_LINGER: {
struct linger lingr;
lingr.l_onoff = intVal > 0 ? 1 : 0;
lingr.l_linger = intVal;
result = setsockopt(handle, SOL_SOCKET, SO_LINGER, &lingr,
sizeof(struct linger));
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_TCP_NODELAY: {
if ((anOption >> 16) & BROKEN_TCP_NODELAY) {
return;
}
result = setsockopt(handle, IPPROTO_TCP, TCP_NODELAY, &intVal, intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_SO_SNDBUF: {
result = setsockopt(handle, SOL_SOCKET, SO_SNDBUF, &intVal, intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_SO_RCVBUF: {
result = setsockopt(handle, SOL_SOCKET, SO_RCVBUF, &intVal, intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_SO_BROADCAST: {
result = setsockopt(handle, SOL_SOCKET, SO_BROADCAST, &intVal, intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_SO_REUSEADDR: {
result = setsockopt(handle, SOL_SOCKET, SO_REUSEADDR, &intVal, intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_SO_KEEPALIVE: {
result = setsockopt(handle, SOL_SOCKET, SO_KEEPALIVE, &intVal, intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_SO_OOBINLINE: {
result = setsockopt(handle, SOL_SOCKET, SO_OOBINLINE, &intVal, intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_IP_TOS: {
result = getOrSetSocketOption(SOCKOPT_SET, handle, IP_TOS,
IPV6_TCLASS, &intVal, &intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_REUSEADDR_AND_REUSEPORT: {
// SO_REUSEPORT doesn't need to get set on this System
result = setsockopt(handle, SOL_SOCKET, SO_REUSEADDR, &intVal, intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_SO_RCVTIMEOUT: {
timeval timeout(toTimeval(intVal));
result = setsockopt(handle, SOL_SOCKET, SO_RCVTIMEO, &timeout,
sizeof(struct timeval));
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
#ifdef ENABLE_MULTICAST
case JAVASOCKOPT_MCAST_TTL: {
if ((anOption >> 16) & BROKEN_MULTICAST_TTL) {
return;
}
result = getOrSetSocketOption(SOCKOPT_SET, handle, IP_MULTICAST_TTL,
IPV6_MULTICAST_HOPS, &intVal,
&intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_MCAST_ADD_MEMBERSHIP: {
mcastAddDropMembership(env, handle, optVal,
(anOption >> 16) & BROKEN_MULTICAST_IF, IP_ADD_MEMBERSHIP);
break;
}
case JAVASOCKOPT_MCAST_DROP_MEMBERSHIP: {
mcastAddDropMembership(env, handle, optVal,
(anOption >> 16) & BROKEN_MULTICAST_IF, IP_DROP_MEMBERSHIP);
break;
}
case JAVASOCKOPT_IP_MULTICAST_IF: {
if ((anOption >> 16) & BROKEN_MULTICAST_IF) {
return;
}
// This call is IPv4 only. The socket may be IPv6, but the address
// that identifies the interface to join must be an IPv4 address.
if (sockVal.ss_family != AF_INET) {
jniThrowSocketException(env, EAFNOSUPPORT);
return;
}
struct ip_mreqn mcast_req;
memset(&mcast_req, 0, sizeof(mcast_req));
struct sockaddr_in *sin = (struct sockaddr_in *) &sockVal;
mcast_req.imr_address = sin->sin_addr;
result = setsockopt(handle, IPPROTO_IP, IP_MULTICAST_IF,
&mcast_req, sizeof(mcast_req));
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_IP_MULTICAST_IF2: {
if ((anOption >> 16) & BROKEN_MULTICAST_IF) {
return;
}
int addressFamily = getSocketAddressFamily(handle);
int interfaceIndex = intVal;
void *optionValue;
socklen_t optionLength;
struct ip_mreqn multicastRequest;
switch (addressFamily) {
case AF_INET:
// IP_MULTICAST_IF expects a pointer to a struct ip_mreqn.
memset(&multicastRequest, 0, sizeof(multicastRequest));
multicastRequest.imr_ifindex = interfaceIndex;
optionValue = &multicastRequest;
optionLength = sizeof(multicastRequest);
break;
case AF_INET6:
// IPV6_MULTICAST_IF expects a pointer to an integer.
optionValue = &interfaceIndex;
optionLength = sizeof(interfaceIndex);
break;
default:
jniThrowSocketException(env, EAFNOSUPPORT);
return;
}
result = getOrSetSocketOption(SOCKOPT_SET, handle,
IP_MULTICAST_IF, IPV6_MULTICAST_IF, optionValue,
&optionLength);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
case JAVASOCKOPT_IP_MULTICAST_LOOP: {
result = getOrSetSocketOption(SOCKOPT_SET, handle,
IP_MULTICAST_LOOP,
IPV6_MULTICAST_LOOP, &intVal,
&intSize);
if (0 != result) {
jniThrowSocketException(env, errno);
return;
}
break;
}
#else
case JAVASOCKOPT_MCAST_TTL:
case JAVASOCKOPT_MCAST_ADD_MEMBERSHIP:
case JAVASOCKOPT_MCAST_DROP_MEMBERSHIP:
case JAVASOCKOPT_IP_MULTICAST_IF:
case JAVASOCKOPT_IP_MULTICAST_IF2:
case JAVASOCKOPT_IP_MULTICAST_LOOP: {
jniThrowException(env, "java/lang/UnsupportedOperationException", NULL);
return;
}
#endif // def ENABLE_MULTICAST
default: {
jniThrowSocketException(env, ENOPROTOOPT);
}
}
}
static jint osNetworkSystem_getSocketFlagsImpl(JNIEnv* env, jclass clazz) {
// LOGD("ENTER getSocketFlagsImpl");
// Not implemented by harmony
return 0;
}
static void osNetworkSystem_socketCloseImpl(JNIEnv* env, jclass clazz,
jobject fileDescriptor) {
// LOGD("ENTER socketCloseImpl");
int fd;
if (!jniGetFd(env, fileDescriptor, fd)) {
return;
}
jniSetFileDescriptorOfFD(env, fileDescriptor, -1);
close(fd);
}
static jobject osNetworkSystem_inheritedChannel(JNIEnv* env, jobject obj) {
// Android never has stdin/stdout connected to a socket.
return NULL;
}
/*
* JNI registration.
*/
static JNINativeMethod gMethods[] = {
/* name, signature, funcPtr */
{ "createStreamSocketImpl", "(Ljava/io/FileDescriptor;Z)V", (void*) osNetworkSystem_createStreamSocketImpl },
{ "createDatagramSocketImpl", "(Ljava/io/FileDescriptor;Z)V", (void*) osNetworkSystem_createDatagramSocketImpl },
{ "readSocketImpl", "(Ljava/io/FileDescriptor;[BIII)I", (void*) osNetworkSystem_readSocketImpl },
{ "readSocketDirectImpl", "(Ljava/io/FileDescriptor;III)I", (void*) osNetworkSystem_readSocketDirectImpl },
{ "writeSocketImpl", "(Ljava/io/FileDescriptor;[BII)I", (void*) osNetworkSystem_writeSocketImpl },
{ "writeSocketDirectImpl", "(Ljava/io/FileDescriptor;III)I", (void*) osNetworkSystem_writeSocketDirectImpl },
{ "setNonBlockingImpl", "(Ljava/io/FileDescriptor;Z)V", (void*) osNetworkSystem_setNonBlockingImpl },
{ "connectWithTimeoutSocketImpl", "(Ljava/io/FileDescriptor;IILjava/net/InetAddress;II[B)I", (void*) osNetworkSystem_connectWithTimeoutSocketImpl },
{ "connectStreamWithTimeoutSocketImpl","(Ljava/io/FileDescriptor;IIILjava/net/InetAddress;)V", (void*) osNetworkSystem_connectStreamWithTimeoutSocketImpl },
{ "socketBindImpl", "(Ljava/io/FileDescriptor;ILjava/net/InetAddress;)V", (void*) osNetworkSystem_socketBindImpl },
{ "listenStreamSocketImpl", "(Ljava/io/FileDescriptor;I)V", (void*) osNetworkSystem_listenStreamSocketImpl },
{ "availableStreamImpl", "(Ljava/io/FileDescriptor;)I", (void*) osNetworkSystem_availableStreamImpl },
{ "acceptSocketImpl", "(Ljava/io/FileDescriptor;Ljava/net/SocketImpl;Ljava/io/FileDescriptor;I)V",(void*) osNetworkSystem_acceptSocketImpl },
{ "supportsUrgentDataImpl", "(Ljava/io/FileDescriptor;)Z", (void*) osNetworkSystem_supportsUrgentDataImpl },
{ "sendUrgentDataImpl", "(Ljava/io/FileDescriptor;B)V", (void*) osNetworkSystem_sendUrgentDataImpl },
{ "connectDatagramImpl2", "(Ljava/io/FileDescriptor;IILjava/net/InetAddress;)V", (void*) osNetworkSystem_connectDatagramImpl2 },
{ "disconnectDatagramImpl", "(Ljava/io/FileDescriptor;)V", (void*) osNetworkSystem_disconnectDatagramImpl },
{ "peekDatagramImpl", "(Ljava/io/FileDescriptor;Ljava/net/InetAddress;I)I", (void*) osNetworkSystem_peekDatagramImpl },
{ "receiveDatagramImpl", "(Ljava/io/FileDescriptor;Ljava/net/DatagramPacket;[BIIIZ)I", (void*) osNetworkSystem_receiveDatagramImpl },
{ "receiveDatagramDirectImpl", "(Ljava/io/FileDescriptor;Ljava/net/DatagramPacket;IIIIZ)I", (void*) osNetworkSystem_receiveDatagramDirectImpl },
{ "recvConnectedDatagramImpl", "(Ljava/io/FileDescriptor;Ljava/net/DatagramPacket;[BIIIZ)I", (void*) osNetworkSystem_recvConnectedDatagramImpl },
{ "recvConnectedDatagramDirectImpl", "(Ljava/io/FileDescriptor;Ljava/net/DatagramPacket;IIIIZ)I", (void*) osNetworkSystem_recvConnectedDatagramDirectImpl },
{ "sendDatagramImpl", "(Ljava/io/FileDescriptor;[BIIIZILjava/net/InetAddress;)I", (void*) osNetworkSystem_sendDatagramImpl },
{ "sendDatagramDirectImpl", "(Ljava/io/FileDescriptor;IIIIZILjava/net/InetAddress;)I", (void*) osNetworkSystem_sendDatagramDirectImpl },
{ "sendConnectedDatagramImpl", "(Ljava/io/FileDescriptor;[BIIZ)I", (void*) osNetworkSystem_sendConnectedDatagramImpl },
{ "sendConnectedDatagramDirectImpl", "(Ljava/io/FileDescriptor;IIIZ)I", (void*) osNetworkSystem_sendConnectedDatagramDirectImpl },
{ "createServerStreamSocketImpl", "(Ljava/io/FileDescriptor;Z)V", (void*) osNetworkSystem_createServerStreamSocketImpl },
{ "shutdownInputImpl", "(Ljava/io/FileDescriptor;)V", (void*) osNetworkSystem_shutdownInputImpl },
{ "shutdownOutputImpl", "(Ljava/io/FileDescriptor;)V", (void*) osNetworkSystem_shutdownOutputImpl },
{ "sendDatagramImpl2", "(Ljava/io/FileDescriptor;[BIIILjava/net/InetAddress;)I", (void*) osNetworkSystem_sendDatagramImpl2 },
{ "selectImpl", "([Ljava/io/FileDescriptor;[Ljava/io/FileDescriptor;II[IJ)Z", (void*) osNetworkSystem_selectImpl },
{ "getSocketLocalAddressImpl", "(Ljava/io/FileDescriptor;)Ljava/net/InetAddress;", (void*) osNetworkSystem_getSocketLocalAddressImpl },
{ "getSocketLocalPortImpl", "(Ljava/io/FileDescriptor;)I", (void*) osNetworkSystem_getSocketLocalPortImpl },
{ "getSocketOptionImpl", "(Ljava/io/FileDescriptor;I)Ljava/lang/Object;", (void*) osNetworkSystem_getSocketOptionImpl },
{ "setSocketOptionImpl", "(Ljava/io/FileDescriptor;ILjava/lang/Object;)V", (void*) osNetworkSystem_setSocketOptionImpl },
{ "getSocketFlagsImpl", "()I", (void*) osNetworkSystem_getSocketFlagsImpl },
{ "socketCloseImpl", "(Ljava/io/FileDescriptor;)V", (void*) osNetworkSystem_socketCloseImpl },
{ "setInetAddressImpl", "(Ljava/net/InetAddress;[B)V", (void*) osNetworkSystem_setInetAddressImpl },
{ "inheritedChannel", "()Ljava/nio/channels/Channel;", (void*) osNetworkSystem_inheritedChannel },
{ "byteArrayToIpString", "([B)Ljava/lang/String;", (void*) osNetworkSystem_byteArrayToIpString },
{ "ipStringToByteArray", "(Ljava/lang/String;)[B", (void*) osNetworkSystem_ipStringToByteArray },
};
int register_org_apache_harmony_luni_platform_OSNetworkSystem(JNIEnv* env) {
return initCachedFields(env) && jniRegisterNativeMethods(env,
"org/apache/harmony/luni/platform/OSNetworkSystem",
gMethods,
NELEM(gMethods));
}
// END android-changed